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<div id="dev-warning" class="admonition note">
  <p class="first admonition-title">Notice</p>
  <p class="last">This document is for a development version of Ceph.</p>
</div>
  <div id="docubetter" align="right" style="padding: 5px; font-weight: bold;">
    <a href="https://pad.ceph.com/p/Report_Documentation_Bugs">Report a Documentation Bug</a>
  </div>

  
  <div class="section" id="id1">
<h1>资料库结构<a class="headerlink" href="#id1" title="Permalink to this headline">¶</a></h1>
<p>ceph.git/ceph-object-corpus 是一个子模块。</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>bin/   # misc scripts
archive/$version/objects/$type/$hash  # a sample of encoded objects from a specific version
</pre></div>
</div>
<p>You can also mark known or deliberate incompatibilities between versions with:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>archive/$version/forward_incompat/$type
</pre></div>
</div>
<p>The presence of a file indicates that new versions of code cannot
decode old objects across that <code class="docutils literal notranslate"><span class="pre">$version</span></code> (this is normally the case).</p>
<div class="section" id="id2">
<h2>如何生成对象资料库<a class="headerlink" href="#id2" title="Permalink to this headline">¶</a></h2>
<p>We can generate an object corpus for a particular version of ceph using the
script of <code class="docutils literal notranslate"><span class="pre">script/gen-corpus.sh</span></code>, or by following the instructions below:</p>
<ol class="arabic">
<li><p>检出一个干净的库（最好别在你日常工作的库上操作）：</p>
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>git clone ceph.git
<span class="nb">cd</span> ceph
git submodule update --init --recursive
</pre></div>
</div>
</li>
<li><p>带选项编译，这样才能把对象转储到 <code class="docutils literal notranslate"><span class="pre">/tmp/foo</span></code>:</p>
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>rm -rf /tmp/foo <span class="p">;</span> mkdir /tmp/foo
do_cmake.sh -DCMAKE_CXX_FLAGS<span class="o">=</span><span class="s2">&quot;-DENCODE_DUMP_PATH=/tmp/foo&quot;</span>
<span class="nb">cd</span> build
make
</pre></div>
</div>
</li>
<li><p>用 vstart 启动：</p>
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span><span class="nb">cd</span> build
<span class="nv">MON</span><span class="o">=</span><span class="m">3</span> <span class="nv">MGR</span><span class="o">=</span><span class="m">2</span> <span class="nv">OSD</span><span class="o">=</span><span class="m">3</span> <span class="nv">MDS</span><span class="o">=</span><span class="m">3</span> <span class="nv">RGW</span><span class="o">=</span><span class="m">1</span> ../src/vstart.sh -n -x
</pre></div>
</div>
</li>
<li><p>Use as much functionality of the cluster as you can, to exercise as many object encoder methods as possible:</p>
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>bin/ceph osd pool create mypool
bin/rados -p mypool bench <span class="m">10</span> write -b <span class="m">123</span>
bin/ceph osd out <span class="m">0</span>
bin/ceph osd <span class="k">in</span> <span class="m">0</span>
bin/init-ceph restart osd.1
<span class="k">for</span> f <span class="k">in</span> ../qa/workunits/cls/*.sh <span class="p">;</span> <span class="k">do</span> <span class="nv">PATH</span><span class="o">=</span><span class="s2">&quot;bin:</span><span class="nv">$PATH</span><span class="s2">&quot;</span> <span class="nv">$f</span> <span class="p">;</span> <span class="k">done</span>
<span class="nv">PATH</span><span class="o">=</span><span class="s2">&quot;bin:</span><span class="nv">$PATH</span><span class="s2">&quot;</span> ../qa/workunits/rados/test.sh
bin/ceph_test_librbd
bin/ceph_test_libcephfs
bin/init-ceph restart mds.a
../qa/workunits/rgw/run-s3tests.sh
</pre></div>
</div>
</li>
<li><p>Stop:</p>
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>../src/stop.sh
</pre></div>
</div>
</li>
<li><p>Import the corpus (this will take a few minutes):</p>
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>../src/test/encoding/import.sh /tmp/foo <span class="sb">`</span>bin/ceph-dencoder version<span class="sb">`</span> ../ceph-object-corpus/archive
../src/test/encoding/import-generated.sh ../ceph-object-corpus/archive
</pre></div>
</div>
</li>
<li><p>Prune it!  There will be a bazillion copies of various objects, and we only want a representative sample.:</p>
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span><span class="nb">pushd</span> ../ceph-object-corpus
bin/prune-archive.sh
<span class="nb">popd</span>
</pre></div>
</div>
</li>
<li><p>Verify the tests pass:</p>
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>ctest -R readable.sh
</pre></div>
</div>
</li>
<li><p>Commit it to the corpus repo and push:</p>
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span><span class="nb">pushd</span> ../ceph-object-corpus
git checkout -b wip-new
git add archive/<span class="sb">`</span>../build/bin/ceph-dencoder version<span class="sb">`</span>
git commit -m <span class="sb">`</span>../build/bin/ceph-dencoder version<span class="sb">`</span>
git remote add cc git@github.com:ceph/ceph-object-corpus.git
git push cc wip-new
<span class="nb">popd</span>
</pre></div>
</div>
</li>
<li><p>Go test it out:</p>
<div class="highlight-shell notranslate"><div class="highlight"><pre><span></span><span class="nb">cd</span> my/regular/tree
<span class="nb">cd</span> ceph-object-corpus
git fetch origin
git checkout wip-new
<span class="nb">cd</span> ../build
ctest -R readable.sh
</pre></div>
</div>
</li>
<li><p>If everything looks good, update the submodule master branch, and commit the submodule in ceph.git.</p></li>
</ol>
</div>
</div>



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